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Sinka V, Cruz DA, Martín VS, Padrón JI. Shortest Enantioselective Total Syntheses of (+)-Isolaurepinnacin and (+)-Neoisoprelaurefucin. Org Lett 2022; 24:5271-5275. [PMID: 35834432 PMCID: PMC9344465 DOI: 10.1021/acs.orglett.2c01769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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The shortest enantioselective total syntheses of (+)-isolaurepinnacin
and (+)-neoisoprelaurefucin have been accomplished. These syntheses
were based on a common parallel synthetic strategy using Prins–Peterson
cyclization in their core construction. In only one step, a seven-membered
ring oxacycle with the correct cis-stereochemistry
ring closure and the Δ4 position of the endocyclic
double bond in (+)-isolaurepinnacin was obtained. This unsaturation
was also necessary to accede to the bromodioxabicycle on (+)-neoisoprelaurefucin.
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Affiliation(s)
- Victoria Sinka
- Instituto de Productos Naturales y Agrobiología (IPNA), CSIC, 38206 Avda. Astrofísico Fco. Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Daniel A Cruz
- Instituto de Productos Naturales y Agrobiología (IPNA), CSIC, 38206 Avda. Astrofísico Fco. Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Víctor S Martín
- Organic Chemistry Department Avda, Universidad de La Laguna, Instituto Universitario de Bio-Orgánica Antonio González (IUBO), Astrofísico Fco. Sánchez 2, 38206 La Laguna, Tenerife, Spain
| | - Juan I Padrón
- Instituto de Productos Naturales y Agrobiología (IPNA), CSIC, 38206 Avda. Astrofísico Fco. Sánchez 3, 38206 La Laguna, Tenerife, Spain
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Regioselective Synthesis of Organolithiums by Deprotonation. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1460-1567(02)80033-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Katritzky AR, Piffl M, Lang H, Anders E. Regioselectivity of the Reactions of Heteroatom-Stabilized Allyl Anions with Electrophiles. Chem Rev 1999; 99:665-722. [PMID: 11749429 DOI: 10.1021/cr9404297] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alan R. Katritzky
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, and Institut für Organische Chemie und Makromolekulare Chemie der Friedrich-Schiller-Universität Jena, Humboldtstrasse 10, D-07743 Jena, Germany
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Lüning U, Baumgartner H, Manthey C, Meynhardt B. Concave Reagents. 20. Sterically Shielded m-Terphenyls as Selective Agents in General Protonations(1). J Org Chem 1996; 61:7922-7926. [PMID: 11667753 DOI: 10.1021/jo961094r] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
New m-terphenyls with acidic substituents in the 2'-position have been used in general protonations leading to reagent-controlled selectivity enhancements: up to 96:4 for the gamma/alpha-protonation of unsymmetrically substituted allyl anions, up to 97:3 for the protonation of cyclohexyl anions generating preferentially the thermodynamically less stable cis-products. In order to allow a general, reagent-controlled protonation the acidity of the protonating agent should be as low as possible.
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Affiliation(s)
- U. Lüning
- Institut für Organische Chemie, Olshausenstr. 40, D-24098 Kiel, Germany
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Hojo F, Terashima T, Ando W. Reduction of Polysilacycloallenes by Sodium: Structure of the Donor-Free Sodium Salt of an Allyl Anion. Organometallics 1996. [DOI: 10.1021/om960057n] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fusao Hojo
- Department of Chemistry, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
| | - Tomoko Terashima
- Department of Chemistry, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
| | - Wataru Ando
- Department of Chemistry, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
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Probst MF, Modro TA. 3-Silanyl-propenylphosphonates: Properties and alkylation potential. HETEROATOM CHEMISTRY 1995. [DOI: 10.1002/hc.520060614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Shimizu N, Imazu S, Shibata F, Tsuno Y. Stereoselective Synthesis of (E)- and (Z)-2-Alkenyltrimethylsilanes from 1,2-Epoxy-1,3-bis(trimethylsilyl)propane. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1991. [DOI: 10.1246/bcsj.64.1122] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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11
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Guyot B, Pornet J, Miginiac L. Synthèse de N-alkyl tétrahydro-2,3,6,7 azépines et de N-alkyl hexahydro-1,2,3,4,7,8 azocines à partir d'ω-monoalkylaminoallyltriméthylsilanes par processus d'aminométhylation-désilylation intramoléculaire. J Organomet Chem 1990. [DOI: 10.1016/0022-328x(90)80253-v] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Guyot B, Pornet J, Miginiac L. Synthèse d'alkyl-2- tétrahydro-2,3,6,7 oxépinnes et oxocinnes à partir d'allylsilanes. J Organomet Chem 1989. [DOI: 10.1016/0022-328x(89)85057-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mordini A, Palio G, Ricci A, Taddei M. A simple regio- and stereocontrolled synthesis of α-branched allylsilanes. Tetrahedron Lett 1988. [DOI: 10.1016/s0040-4039(00)80661-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Uno H. Regioselective Carboxylation of Silicon-Stabilized Allylic Carbanions and the Synthetic Utility of 2-Silyl-3-butenoates. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1986. [DOI: 10.1246/bcsj.59.2471] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Shimizu N, Shibata F, Tsuno Y. A HIGHLY STEREOSELECTIVE ROUTE TO 2-ALKENYLTRIMETHYLSILANES. CHEM LETT 1985. [DOI: 10.1246/cl.1985.1593] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Hoppe D. Die Homoaldol-Reaktion oder wie man Probleme der Regio- und Stereoselektivität in den Griff bekommt. Angew Chem Int Ed Engl 1984. [DOI: 10.1002/ange.19840961205] [Citation(s) in RCA: 107] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ehlinger E, Magnus P. Silicon in synthesis: use of the highly nucleophilic trimethylsilyallyl anion for the synthesis of steroidal 17-spiro-γ-lactones. Tetrahedron Lett 1980. [DOI: 10.1016/s0040-4039(00)93611-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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The synthesis of alkenes from carbonyl compounds and carbanions α to silicon. VIII: Regioselectivity in the reactions of 2-trimethylsilylallyl carbanion and the synthesis of 1,3-dienes. Tetrahedron Lett 1978. [DOI: 10.1016/s0040-4039(01)94780-x] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Corriu R, Lanneau G, Leclercq D, Samate D. Synthese de cyclodisilanes fonctionnels. Essais d'obtention de disilanes optiquement actifs. J Organomet Chem 1978. [DOI: 10.1016/s0022-328x(00)84158-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Gompper R, Wagner HU. Das Allopolarisierungs-Prinzip. Substituenteneinflüsse auf Reaktionen ambifunktioneller Anionen. Angew Chem Int Ed Engl 1976. [DOI: 10.1002/ange.19760881203] [Citation(s) in RCA: 116] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gompper R, Wagner HU. The Concept of Allopolarization. Effects of Substituents on the Reactions of Ambifunctional Anions. ACTA ACUST UNITED AC 1976. [DOI: 10.1002/anie.197603211] [Citation(s) in RCA: 102] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Dunogues J, Pillot JP, Duffaut N, Ardoin N, Calas R. Silylation directe d'olefines non conjuguees au moyen de chlorosilanes. J Organomet Chem 1974. [DOI: 10.1016/s0022-328x(00)90358-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Cunico RF. Silicon - synthesis and reactivity annual survey covering the year 1973. J Organomet Chem 1974. [DOI: 10.1016/s0022-328x(00)88164-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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